Question

我试图找出一个数字是否是一个完美的数字，但我无法将其打印出来。数字6,496,8128是完美的数字，但是当我输入数字时，它保持从var res2而不是var res1打印。这里的问题是什么，任何人都可以提供帮助吗？

＆＃13;

function perfectNo(number) {
  var temp = 0;
  var res1 = "It is a perfect number";
  var res2 = "It is not a perfect number";
  for (var i = 1; i <= number / 2; i++) {
    if (number % i == 0) {
      temp += i;
    }
  }

  if (temp == number && temp != 0) {
    document.getElementById("results").innerHTML = res1;
  } else {
    document.getElementById("results").innerHTML = res2;
  }
}

＆＃13;

<input id="num">
<input type="button" onclick="perfectNo()" value="check">
<br>
<p>Answer:</p>
<p id="results"></p>
<br>

＆＃13;

Answer 1

尝试：

var number = document.getElementById("num").value;

像这样：

function perfectNo() {
  var number = document.getElementById("num").value;
  console.log(number);
  var temp = 0;
  var res1 = "It is a perfect number";
  var res2 = "It is not a perfect number";
  for (var i = 1; i <= number / 2; i++) {
    if (number % i == 0) {
      temp += i;
    }
  }

  if (temp == number && temp != 0) {
    document.getElementById("results").innerHTML = res1;
  } else {
    document.getElementById("results").innerHTML = res2;
  }
}

<input id="num">
<input type="button" onclick="perfectNo()" value="check">
<br>
<p>Answer:</p>
<p id="results"></p>
<br>

尝试使用getElementById在Javascript中打印正确答案

1 个答案: